Hens haven't laid since I got them in sept

One buff on barred rock both about a year and a half possibly two. Haven't got a egg since I got them. They've been wormed too. I'm at loss on what is going on. I know they are older but I would at least expect at least a egg now and then. They aren't sick, healthy weight and all. They aren't stressed they free range in a area about 800 Sq feet with a 12×10 run and a large hen house with nesting boxes

There are two main reasons for a hen over 1 year old to stop laying in the fall. The first is seasonal molting. While molting all their energy is focused on growing in new feathers. Some hens will resume laying once they finish molting, others won't resume until days start getting longer and springtime is on the way.

The second reason is that the days are too short in the fall/winter. They don't get enough light to maintain production.

The good news is that the days will begin getting longer again in just a few more weeks.